Abstract
The use of a video camera may markedly improve demonstrations of optical spectra. First, the output electrical signal from the camera, which provides full information about a picture to be transmitted, can be used for observing the radiant power spectrum on the screen of a common oscilloscope. Second, increasing the magnification by the camera enhances the resolution of the spectra displayed by a colour monitor. In particular, it becomes possible to resolve the sodium doublet at 579nm (Δλ = 0.6nm).
| Original language | English |
|---|---|
| Pages (from-to) | 184-188 |
| Number of pages | 5 |
| Journal | Physics Education |
| Volume | 47 |
| Issue number | 2 |
| DOIs | |
| State | Published - Mar 2012 |